InChI=1S/C28H40O4/c1-18-13-21(31-7)14-19-9-12-27(5,32-23(18)19)16-20-15-26(4)10-8-11-28(26,6)24(29)22(20)17-25(2,3)30/h13-14,30H,8-12,15-17H2,1-7H3/t26-,27+,28+/m0/s1